DSH 716 Probe impedance for plug discharge test

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DSH 716 / o' D  H& r1 k* ~- T+ [7 C

Probe impedance for plug discharge test

9.1.6 (IEC 60065) 22.5 (IEC 60335) 2.1.1.7 (IEC 60950) 6.1.2, 6.10.3 (IEC 61010) + any other as applicable 3 ^6 u7 |( m* w; z* g! U; v

Standard(s): No. Year
IEC 60065
IEC 60335
9 b  ~  k, ~+ n9 v, }8 u0 g" RIEC 60950
$ k/ p, {: j& f# FIEC 61010
! ~  ?) Z( ^/ s: Z+ any other as applicable
7 |, |+ V. H4 _- J3 S- k8 ]1 KDSH-
0716
2008
Category:
1 O- Y# j' L1 B, k2 c# g* o- k5 MHOUS, MEAS, OFF, TRON,
) l4 h* n- ?0 }' ]/ T5 w" V: @Various…
Subclause(s):
) a- d8 i' ~; S% S$ ~7 j9.1.6
, T% r) L3 i6 L0 D6 R* p$ F22.5
! b& ^* l6 p* _' k5 V2.1.1.7
3 D$ V5 @; L3 ?8 G0 @/ b" Q6.1.2, 6.10.3
…
Developed by: WG2
6 T/ F3 T. c, ZWG4
Subject: Probe impedance for
plug discharge test
2 V0 T- ]" I! k9 D0 s- m2 t7 AKey words:
- Probe impedance
% H: U1 Y; M3 ]- Plug discharge
- >= 100 M

7 d3 P  v2 ?9 C- 25 pF or less
7 |/ n/ ?6 t' UDecision approved at the
1 _0 ~( ?  x! i6 O5 Y' p0 x- ^, k2009 CTL Plenary Meeting
9 S( w2 r8 F, z. oQuestion:
When the plug discharge test is performed using a voltage probe and oscilloscope for
direct measurement of the voltage decay, what probe impedance shall be used to ensure
uniform and comparable results?
Note: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
Decision:
. w& C0 ~* e3 @( gIf the relevant standard does not contain contradictory requirements, a voltage probe
8 h! j8 p* I2 r. `having an input impedance of 100 M
or greater in parallel with an input capacitance of
25 pF or less, shall be used for this test.
8 z1 {8 l, Y4 i5 w8 M' S7 KFor other (automatic) equipment with special measurement techniques equivalent
measures shall be taken to ensure comparable results.
5 v8 [0 l8 M6 K, Y0 {1 C/ F
6 h. b) e2 v2 X1 X4 T6 g) U1 ?